public static string BuildQRCodeValue(long amount, string accountToPresent, string trackingId)
{
try
{
QRDEList listIn = new QRDEList();
listIn.AddToList(QRDE.Create(EMVQRTagsEnum.PAYLOAD_FORMAT_INDICATOR_00, "01"));
listIn.AddToList(QRDE.Create(EMVQRTagsEnum.POINT_OF_INITIATION_METHOD_01, "12"));
QRDE _26 = QRDE.Create(EMVQRTagsEnum.MERCHANT_ACCOUNT_INFORMATION_TEMPLATE_26);
QRDE.Create(EMVQRTagsEnum.GLOBALLY_UNIQUE_IDENTIFIER_00, accountToPresent, _26);
EMVQRTagsEnum.CreateUnknown(TagId._05, trackingId, _26); //tracking id
listIn.AddToList(_26);
//listIn.AddToList(QRDE.Create(EMVQRTagsEnum.MERCHANT_CATEGORY_CODE_52, "4111"));
//listIn.AddToList(QRDE.Create(EMVQRTagsEnum.COUNTRY_CODE_58, "CN"));
listIn.AddToList(QRDE.Create(EMVQRTagsEnum.TRANSACTION_AMOUNT_54, Convert.ToString(amount)));
//listIn.AddToList(QRDE.Create(EMVQRTagsEnum.TRANSACTION_CURRENCY_53, "156"));
listIn.AddToList(QRDE.Create(EMVQRTagsEnum.CRC_63, "0000"));
return(listIn.Serialize());
}
catch (Exception ex)
{
Logger.Log(ex.Message);
return(string.Empty);
}
}
private async void EmvTxCtl_TxCompleted(object sender, EventArgs e)
{
try
{
TransactionType transactionType;
string fromAccountNumber = "";
string cardSerialNumberFrom = "";
string toAccountNumber = "";
string cardSerialNumberTo = "";
if ((e as TxCompletedEventArgs).EMV_Data.IsPresent())
{
if ((e as TxCompletedEventArgs).TxResult == TxResult.Approved || (e as TxCompletedEventArgs).TxResult == TxResult.ContactlessOnline)
{
TLV data = (e as TxCompletedEventArgs).EMV_Data.Get();
byte[] panBCD;
TLV _5A = data.Children.Get(EMVTagsEnum.APPLICATION_PRIMARY_ACCOUNT_NUMBER_PAN_5A_KRN.Tag);
if (_5A != null)
{
panBCD = _5A.Value;
}
else
{
TLV _57 = data.Children.Get(EMVTagsEnum.TRACK_2_EQUIVALENT_DATA_57_KRN.Tag);
if (_57 == null)
{
throw new Exception("No PAN found");
}
String panString = Formatting.ByteArrayToHexString(_57.Value);
panBCD = Formatting.StringToBcd(panString.Split('D')[0], false);
}
TLV _9F02 = data.Children.Get(EMVTagsEnum.AMOUNT_AUTHORISED_NUMERIC_9F02_KRN.Tag);
if (_9F02 == null)
{
throw new Exception("No Amount found");
}
long amount = Formatting.BcdToLong(_9F02.Value);
switch (flowType)
{
case FlowType.SendMoneyFromCardToApp:
toAccountNumber = SessionSingleton.Account.AccountNumberId;
cardSerialNumberFrom = Formatting.BcdToString(panBCD);
transactionType = TransactionType.SendMoneyFromCardToApp;
break;
case FlowType.SendMoneyFromAppToCard:
fromAccountNumber = SessionSingleton.Account.AccountNumberId;
cardSerialNumberTo = Formatting.BcdToString(panBCD);
transactionType = TransactionType.SendMoneyFromAppToCard;
break;
default:
throw new Exception("Unknown flow type:" + flowType);
}
try
{
await CallTransactByCardWebService(fromAccountNumber, toAccountNumber, cardSerialNumberFrom, cardSerialNumberTo, amount, transactionType, data);
Device.BeginInvokeOnMainThread(() =>
{
lblTransactSummary.Text = "Transaction Completed Succesfully";
UpdateView(ViewState.StepSummary);
});
}
catch
{
Device.BeginInvokeOnMainThread(() =>
{
lblTransactSummary.Text = "Declined, could not go online.";
UpdateView(ViewState.StepSummary);
});
}
}
else
{
Device.BeginInvokeOnMainThread(() =>
{
lblTransactSummary.Text = (e as TxCompletedEventArgs).TxResult.ToString();
UpdateView(ViewState.StepSummary);
});
}
}
else if ((e as TxCompletedEventArgs).QR_Data.IsPresent())
{
QRDEList data = (e as TxCompletedEventArgs).QR_Data.Get();
QRDE _26 = data.Get(EMVQRTagsEnum.MERCHANT_ACCOUNT_INFORMATION_TEMPLATE_26.Tag);
QRDE _54 = data.Get(EMVQRTagsEnum.TRANSACTION_AMOUNT_54.Tag);
QRDE gui = _26.Children.Get(EMVQRTagsEnum.GLOBALLY_UNIQUE_IDENTIFIER_00.Tag);
QRDE tracking = _26.Children.Get(TagId._05);
long amount = Convert.ToInt64(_54.Value);
if ((e as TxCompletedEventArgs).TxResult == TxResult.QRCodeScanned)
{
switch (flowType)
{
case FlowType.SendMoneyFromCardToApp:
throw new Exception("Invalid flow type for Scanned QR code");
case FlowType.SendMoneyFromAppToCard:
fromAccountNumber = SessionSingleton.Account.AccountNumberId;
toAccountNumber = gui.Value;
transactionType = TransactionType.SendMoneyFromAppToCard;
break;
default:
throw new Exception("Unknown flow type:" + flowType);
}
try
{
await CallTransactByQRCodeWebService(fromAccountNumber, toAccountNumber, amount, tracking.Value);
Device.BeginInvokeOnMainThread(() =>
{
lblTransactSummary.Text = "Transaction Completed Succesfully";
UpdateView(ViewState.StepSummary);
});
}
catch (Exception ex)
{
Device.BeginInvokeOnMainThread(() =>
{
lblTransactSummary.Text = "Declined, could not go online.";
UpdateView(ViewState.StepSummary);
});
}
}
else if ((e as TxCompletedEventArgs).TxResult == TxResult.QRCodeToPoll)
{
switch (flowType)
{
case FlowType.SendMoneyFromCardToApp:
break;
case FlowType.SendMoneyFromAppToCard:
throw new Exception("Invalid flow type for QR code");
default:
throw new Exception("Unknown flow type:" + flowType);
}
try
{
bool success = await CallTransactGetStateWebService(tracking.Value);
//bool success = await CallTransactGetStateWebService("929fa290b20647988f72f2ca762bc3e7");
if (success)
{
Device.BeginInvokeOnMainThread(() =>
{
lblTransactSummary.Text = "Transaction Approved";
UpdateView(ViewState.StepSummary);
});
}
else
{
Device.BeginInvokeOnMainThread(() =>
{
App.Current.MainPage.DisplayAlert("Info", "Transaction not found, try again if you believe the transaction was approved", "OK");
});
}
}
catch
{
Device.BeginInvokeOnMainThread(() =>
{
App.Current.MainPage.DisplayAlert("Info", "Unknown, there is no connectivity to the server, try again if you believe the tx was approved", "OK");
});
}
}
else
{
Device.BeginInvokeOnMainThread(() =>
{
lblTransactSummary.Text = (e as TxCompletedEventArgs).TxResult.ToString();
UpdateView(ViewState.StepSummary);
});
}
}
else
{
Device.BeginInvokeOnMainThread(() =>
{
lblTransactSummary.Text = "Declined";
UpdateView(ViewState.StepSummary);
});
}
}
catch (Exception ex)
{
Device.BeginInvokeOnMainThread(() =>
{
lblTransactSummary.Text = ex.Message;
UpdateView(ViewState.StepSummary);
});
}
}
